-83.16% is the change from 938 to 158
Calculation steps:
[( 158 - 938 ) ÷ 938] x 100 = -83.16%
Formula
Percentage change = [(158 - 938) / 938] x 100
Subtract the new number by the original number
158 - 938 = -780
-780 ÷ 938 = -0.8315565031982942
-0.8315565031982942 x 100 = -83.16%