-68.16% is the change from 537 to 171
Calculation steps:
[( 171 - 537 ) ÷ 537] x 100 = -68.16%
Formula
Percentage change = [(171 - 537) / 537] x 100
Subtract the new number by the original number
171 - 537 = -366
-366 ÷ 537 = -0.6815642458100558
-0.6815642458100558 x 100 = -68.16%