-57.5% is the change from 160 to 68
Calculation steps:
[( 68 - 160 ) ÷ 160] x 100 = -57.5%
Formula
Percentage change = [(68 - 160) / 160] x 100
Subtract the new number by the original number
68 - 160 = -92
-92 ÷ 160 = -0.575
-0.575 x 100 = -57.5%
Example