-40.79% is the change from 331 to 196
Calculation steps:
[( 196 - 331 ) ÷ 331] x 100 = -40.79%
Formula
Percentage change = [(196 - 331) / 331] x 100
Subtract the new number by the original number
196 - 331 = -135
-135 ÷ 331 = -0.4078549848942598
-0.4078549848942598 x 100 = -40.79%