-71.68% is the change from 173 to 49
Calculation steps:
[( 49 - 173 ) ÷ 173] x 100 = -71.68%
Formula
Percentage change = [(49 - 173) / 173] x 100
Subtract the new number by the original number
49 - 173 = -124
-124 ÷ 173 = -0.7167630057803468
-0.7167630057803468 x 100 = -71.68%