-55.49% is the change from 173 to 77
Calculation steps:
[( 77 - 173 ) ÷ 173] x 100 = -55.49%
Formula
Percentage change = [(77 - 173) / 173] x 100
Subtract the new number by the original number
77 - 173 = -96
-96 ÷ 173 = -0.5549132947976878
-0.5549132947976878 x 100 = -55.49%