-51.88% is the change from 160 to 77
Calculation steps:
[( 77 - 160 ) ÷ 160] x 100 = -51.88%
Formula
Percentage change = [(77 - 160) / 160] x 100
Subtract the new number by the original number
77 - 160 = -83
-83 ÷ 160 = -0.51875
-0.51875 x 100 = -51.88%