-81.97% is the change from 61 to 11
Calculation steps:
[( 11 - 61 ) ÷ 61] x 100 = -81.97%
Formula
Percentage change = [(11 - 61) / 61] x 100
Subtract the new number by the original number
11 - 61 = -50
-50 ÷ 61 = -0.819672131147541
-0.819672131147541 x 100 = -81.97%