-46.53% is the change from 331 to 177
Calculation steps:
[( 177 - 331 ) ÷ 331] x 100 = -46.53%
Formula
Percentage change = [(177 - 331) / 331] x 100
Subtract the new number by the original number
177 - 331 = -154
-154 ÷ 331 = -0.4652567975830816
-0.4652567975830816 x 100 = -46.53%