-50.82% is the change from 61 to 30
Calculation steps:
[( 30 - 61 ) ÷ 61] x 100 = -50.82%
Formula
Percentage change = [(30 - 61) / 61] x 100
Subtract the new number by the original number
30 - 61 = -31
-31 ÷ 61 = -0.5081967213114754
-0.5081967213114754 x 100 = -50.82%