55.56% is the change from 54 to 84
Calculation steps:
[( 84 - 54 ) ÷ 54] x 100 = 55.56%
Formula
Percentage change = [(84 - 54) / 54] x 100
Subtract the new number by the original number
84 - 54 = 30
30 ÷ 54 = 0.5555555555555556
0.5555555555555556 x 100 = 55.56%