-62.96% is the change from 54 to 20
Calculation steps:
[( 20 - 54 ) ÷ 54] x 100 = -62.96%
Formula
Percentage change = [(20 - 54) / 54] x 100
Subtract the new number by the original number
20 - 54 = -34
-34 ÷ 54 = -0.6296296296296297
-0.6296296296296297 x 100 = -62.96%