-20.24% is the change from 331 to 264
Calculation steps:
[( 264 - 331 ) ÷ 331] x 100 = -20.24%
Formula
Percentage change = [(264 - 331) / 331] x 100
Subtract the new number by the original number
264 - 331 = -67
-67 ÷ 331 = -0.20241691842900303
-0.20241691842900303 x 100 = -20.24%