-25.54% is the change from 231 to 172
Calculation steps:
[( 172 - 231 ) ÷ 231] x 100 = -25.54%
Formula
Percentage change = [(172 - 231) / 231] x 100
Subtract the new number by the original number
172 - 231 = -59
-59 ÷ 231 = -0.2554112554112554
-0.2554112554112554 x 100 = -25.54%