-50.63% is the change from 160 to 79
Calculation steps:
[( 79 - 160 ) ÷ 160] x 100 = -50.63%
Formula
Percentage change = [(79 - 160) / 160] x 100
Subtract the new number by the original number
79 - 160 = -81
-81 ÷ 160 = -0.50625
-0.50625 x 100 = -50.63%