80.84% is the change from 308 to 557
Calculation steps:
[( 557 - 308 ) ÷ 308] x 100 = 80.84%
Formula
Percentage change = [(557 - 308) / 308] x 100
Subtract the new number by the original number
557 - 308 = 249
249 ÷ 308 = 0.8084415584415584
0.8084415584415584 x 100 = 80.84%