170% is the change from 80 to 216
Calculation steps:
[( 216 - 80 ) ÷ 80] x 100 = 170%
Formula
Percentage change = [(216 - 80) / 80] x 100
Subtract the new number by the original number
216 - 80 = 136
136 ÷ 80 = 1.7
1.7 x 100 = 170%
Example