-71.9% is the change from 331 to 93
Calculation steps:
[( 93 - 331 ) ÷ 331] x 100 = -71.9%
Formula
Percentage change = [(93 - 331) / 331] x 100
Subtract the new number by the original number
93 - 331 = -238
-238 ÷ 331 = -0.7190332326283988
-0.7190332326283988 x 100 = -71.9%