-62.22% is the change from 90 to 34
Calculation steps:
[( 34 - 90 ) ÷ 90] x 100 = -62.22%
Formula
Percentage change = [(34 - 90) / 90] x 100
Subtract the new number by the original number
34 - 90 = -56
-56 ÷ 90 = -0.6222222222222222
-0.6222222222222222 x 100 = -62.22%