-86.36% is the change from 902 to 123
Calculation steps:
[( 123 - 902 ) ÷ 902] x 100 = -86.36%
Formula
Percentage change = [(123 - 902) / 902] x 100
Subtract the new number by the original number
123 - 902 = -779
-779 ÷ 902 = -0.8636363636363636
-0.8636363636363636 x 100 = -86.36%