-35.93% is the change from 270 to 173
Calculation steps:
[( 173 - 270 ) ÷ 270] x 100 = -35.93%
Formula
Percentage change = [(173 - 270) / 270] x 100
Subtract the new number by the original number
173 - 270 = -97
-97 ÷ 270 = -0.3592592592592593
-0.3592592592592593 x 100 = -35.93%