75% is the change from 160 to 280
Calculation steps:
[( 280 - 160 ) ÷ 160] x 100 = 75%
Formula
Percentage change = [(280 - 160) / 160] x 100
Subtract the new number by the original number
280 - 160 = 120
120 ÷ 160 = 0.75
0.75 x 100 = 75%
Example