1724.44% is the change from 45 to 821
Calculation steps:
[( 821 - 45 ) ÷ 45] x 100 = 1724.44%
Formula
Percentage change = [(821 - 45) / 45] x 100
Subtract the new number by the original number
821 - 45 = 776
776 ÷ 45 = 17.244444444444444
17.244444444444444 x 100 = 1724.44%