-89.97% is the change from 897 to 90
Calculation steps:
[( 90 - 897 ) ÷ 897] x 100 = -89.97%
Formula
Percentage change = [(90 - 897) / 897] x 100
Subtract the new number by the original number
90 - 897 = -807
-807 ÷ 897 = -0.8996655518394648
-0.8996655518394648 x 100 = -89.97%