-73.59% is the change from 231 to 61
Calculation steps:
[( 61 - 231 ) ÷ 231] x 100 = -73.59%
Formula
Percentage change = [(61 - 231) / 231] x 100
Subtract the new number by the original number
61 - 231 = -170
-170 ÷ 231 = -0.7359307359307359
-0.7359307359307359 x 100 = -73.59%