45.57% is the change from 564 to 821
Calculation steps:
[( 821 - 564 ) ÷ 564] x 100 = 45.57%
Formula
Percentage change = [(821 - 564) / 564] x 100
Subtract the new number by the original number
821 - 564 = 257
257 ÷ 564 = 0.45567375886524825
0.45567375886524825 x 100 = 45.57%