Assessing the performance and impact of your influencer marketing campaign involves several critical steps:

1. Views and Engagement: Track views, likes, comments, and shares on the content created by the influencer for your campaign. This represents the immediate response to your content and gives a quick measure of its success.

2. Audience Growth: Monitor increase in followers or subscribers post the influencer campaign. A successful campaign will often lead to significant audience growth.

3. Conversion Rates: Use analytic tools available on the platform, and UTM codes, to trace back purchases or sign-ups to the influencer’s content.

4. Cost-Per-Action (CPA): Calculate the CPA, which considers the cost of the campaign divided by the number of desired actions (subscribes, purchases, etc.) it generated.

5. Return on Investment (ROI): Calculate the ROI of your campaign by subtracting the total campaign costs from the total revenue generated due to the campaign, and then dividing the result by the total campaign costs.

The exact tools and techniques may vary based on the influencer marketing platform you use. For example, Flinque offers robust post-campaign analytics, which includes data on audience engagement, audience growth, and conversions. It features a straightforward ROI calculator that can help simplify the process and provide a clearer understanding of your campaign’s performance. However, always remember to choose your influencer marketing platform based on your team’s specific needs and requirements.