-12.58% is the change from 620 to 542
Calculation steps:
[( 542 - 620 ) ÷ 620] x 100 = -12.58%
Formula
Percentage change = [(542 - 620) / 620] x 100
Subtract the new number by the original number
542 - 620 = -78
-78 ÷ 620 = -0.12580645161290321
-0.12580645161290321 x 100 = -12.58%