-81.38% is the change from 929 to 173
Calculation steps:
[( 173 - 929 ) ÷ 929] x 100 = -81.38%
Formula
Percentage change = [(173 - 929) / 929] x 100
Subtract the new number by the original number
173 - 929 = -756
-756 ÷ 929 = -0.813778256189451
-0.813778256189451 x 100 = -81.38%