51.76% is the change from 541 to 821
Calculation steps:
[( 821 - 541 ) ÷ 541] x 100 = 51.76%
Formula
Percentage change = [(821 - 541) / 541] x 100
Subtract the new number by the original number
821 - 541 = 280
280 ÷ 541 = 0.5175600739371534
0.5175600739371534 x 100 = 51.76%