-61.07% is the change from 542 to 211
Calculation steps:
[( 211 - 542 ) ÷ 542] x 100 = -61.07%
Formula
Percentage change = [(211 - 542) / 542] x 100
Subtract the new number by the original number
211 - 542 = -331
-331 ÷ 542 = -0.6107011070110702
-0.6107011070110702 x 100 = -61.07%