-88.22% is the change from 331 to 39
Calculation steps:
[( 39 - 331 ) ÷ 331] x 100 = -88.22%
Formula
Percentage change = [(39 - 331) / 331] x 100
Subtract the new number by the original number
39 - 331 = -292
-292 ÷ 331 = -0.8821752265861027
-0.8821752265861027 x 100 = -88.22%