203.75% is the change from 80 to 243
Calculation steps:
[( 243 - 80 ) ÷ 80] x 100 = 203.75%
Formula
Percentage change = [(243 - 80) / 80] x 100
Subtract the new number by the original number
243 - 80 = 163
163 ÷ 80 = 2.0375
2.0375 x 100 = 203.75%
Example