-18.13% is the change from 331 to 271
Calculation steps:
[( 271 - 331 ) ÷ 331] x 100 = -18.13%
Formula
Percentage change = [(271 - 331) / 331] x 100
Subtract the new number by the original number
271 - 331 = -60
-60 ÷ 331 = -0.18126888217522658
-0.18126888217522658 x 100 = -18.13%