-91.37% is the change from 255 to 22
Calculation steps:
[( 22 - 255 ) ÷ 255] x 100 = -91.37%
Formula
Percentage change = [(22 - 255) / 255] x 100
Subtract the new number by the original number
22 - 255 = -233
-233 ÷ 255 = -0.9137254901960784
-0.9137254901960784 x 100 = -91.37%