50.09% is the change from 557 to 836
Calculation steps:
[( 836 - 557 ) ÷ 557] x 100 = 50.09%
Formula
Percentage change = [(836 - 557) / 557] x 100
Subtract the new number by the original number
836 - 557 = 279
279 ÷ 557 = 0.5008976660682226
0.5008976660682226 x 100 = 50.09%