-88.44% is the change from 770 to 89
Calculation steps:
[( 89 - 770 ) ÷ 770] x 100 = -88.44%
Formula
Percentage change = [(89 - 770) / 770] x 100
Subtract the new number by the original number
89 - 770 = -681
-681 ÷ 770 = -0.8844155844155844
-0.8844155844155844 x 100 = -88.44%