-81.15% is the change from 918 to 173
Calculation steps:
[( 173 - 918 ) ÷ 918] x 100 = -81.15%
Formula
Percentage change = [(173 - 918) / 918] x 100
Subtract the new number by the original number
173 - 918 = -745
-745 ÷ 918 = -0.8115468409586056
-0.8115468409586056 x 100 = -81.15%