-86.89% is the change from 938 to 123
Calculation steps:
[( 123 - 938 ) ÷ 938] x 100 = -86.89%
Formula
Percentage change = [(123 - 938) / 938] x 100
Subtract the new number by the original number
123 - 938 = -815
-815 ÷ 938 = -0.8688699360341151
-0.8688699360341151 x 100 = -86.89%