-26.01% is the change from 173 to 128
Calculation steps:
[( 128 - 173 ) ÷ 173] x 100 = -26.01%
Formula
Percentage change = [(128 - 173) / 173] x 100
Subtract the new number by the original number
128 - 173 = -45
-45 ÷ 173 = -0.26011560693641617
-0.26011560693641617 x 100 = -26.01%