-52.02% is the change from 173 to 83
Calculation steps:
[( 83 - 173 ) ÷ 173] x 100 = -52.02%
Formula
Percentage change = [(83 - 173) / 173] x 100
Subtract the new number by the original number
83 - 173 = -90
-90 ÷ 173 = -0.5202312138728323
-0.5202312138728323 x 100 = -52.02%