-84.39% is the change from 173 to 27
Calculation steps:
[( 27 - 173 ) ÷ 173] x 100 = -84.39%
Formula
Percentage change = [(27 - 173) / 173] x 100
Subtract the new number by the original number
27 - 173 = -146
-146 ÷ 173 = -0.8439306358381503
-0.8439306358381503 x 100 = -84.39%