1455.56% is the change from 54 to 840
Calculation steps:
[( 840 - 54 ) ÷ 54] x 100 = 1455.56%
Formula
Percentage change = [(840 - 54) / 54] x 100
Subtract the new number by the original number
840 - 54 = 786
786 ÷ 54 = 14.555555555555555
14.555555555555555 x 100 = 1455.56%