-81.56% is the change from 938 to 173
Calculation steps:
[( 173 - 938 ) ÷ 938] x 100 = -81.56%
Formula
Percentage change = [(173 - 938) / 938] x 100
Subtract the new number by the original number
173 - 938 = -765
-765 ÷ 938 = -0.8155650319829424
-0.8155650319829424 x 100 = -81.56%