-80.22% is the change from 455 to 90
Calculation steps:
[( 90 - 455 ) ÷ 455] x 100 = -80.22%
Formula
Percentage change = [(90 - 455) / 455] x 100
Subtract the new number by the original number
90 - 455 = -365
-365 ÷ 455 = -0.8021978021978022
-0.8021978021978022 x 100 = -80.22%