212.5% is the change from 80 to 250
Calculation steps:
[( 250 - 80 ) ÷ 80] x 100 = 212.5%
Formula
Percentage change = [(250 - 80) / 80] x 100
Subtract the new number by the original number
250 - 80 = 170
170 ÷ 80 = 2.125
2.125 x 100 = 212.5%
Example