-81.4% is the change from 930 to 173
Calculation steps:
[( 173 - 930 ) ÷ 930] x 100 = -81.4%
Formula
Percentage change = [(173 - 930) / 930] x 100
Subtract the new number by the original number
173 - 930 = -757
-757 ÷ 930 = -0.8139784946236559
-0.8139784946236559 x 100 = -81.4%