-71.57% is the change from 591 to 168
Calculation steps:
[( 168 - 591 ) ÷ 591] x 100 = -71.57%
Formula
Percentage change = [(168 - 591) / 591] x 100
Subtract the new number by the original number
168 - 591 = -423
-423 ÷ 591 = -0.7157360406091371
-0.7157360406091371 x 100 = -71.57%