-40.48% is the change from 331 to 197
Calculation steps:
[( 197 - 331 ) ÷ 331] x 100 = -40.48%
Formula
Percentage change = [(197 - 331) / 331] x 100
Subtract the new number by the original number
197 - 331 = -134
-134 ÷ 331 = -0.40483383685800606
-0.40483383685800606 x 100 = -40.48%