-81.84% is the change from 490 to 89
Calculation steps:
[( 89 - 490 ) ÷ 490] x 100 = -81.84%
Formula
Percentage change = [(89 - 490) / 490] x 100
Subtract the new number by the original number
89 - 490 = -401
-401 ÷ 490 = -0.8183673469387756
-0.8183673469387756 x 100 = -81.84%