81% is the change from 542 to 981
Calculation steps:
[( 981 - 542 ) ÷ 542] x 100 = 81%
Formula
Percentage change = [(981 - 542) / 542] x 100
Subtract the new number by the original number
981 - 542 = 439
439 ÷ 542 = 0.8099630996309963
0.8099630996309963 x 100 = 81%