172.5% is the change from 80 to 218
Calculation steps:
[( 218 - 80 ) ÷ 80] x 100 = 172.5%
Formula
Percentage change = [(218 - 80) / 80] x 100
Subtract the new number by the original number
218 - 80 = 138
138 ÷ 80 = 1.725
1.725 x 100 = 172.5%
Example