45.45% is the change from 561 to 816
Calculation steps:
[( 816 - 561 ) ÷ 561] x 100 = 45.45%
Formula
Percentage change = [(816 - 561) / 561] x 100
Subtract the new number by the original number
816 - 561 = 255
255 ÷ 561 = 0.45454545454545453
0.45454545454545453 x 100 = 45.45%