-78.42% is the change from 417 to 90
Calculation steps:
[( 90 - 417 ) ÷ 417] x 100 = -78.42%
Formula
Percentage change = [(90 - 417) / 417] x 100
Subtract the new number by the original number
90 - 417 = -327
-327 ÷ 417 = -0.7841726618705036
-0.7841726618705036 x 100 = -78.42%