-74.22% is the change from 989 to 255
Calculation steps:
[( 255 - 989 ) ÷ 989] x 100 = -74.22%
Formula
Percentage change = [(255 - 989) / 989] x 100
Subtract the new number by the original number
255 - 989 = -734
-734 ÷ 989 = -0.7421638018200202
-0.7421638018200202 x 100 = -74.22%