-39.85% is the change from 542 to 326
Calculation steps:
[( 326 - 542 ) ÷ 542] x 100 = -39.85%
Formula
Percentage change = [(326 - 542) / 542] x 100
Subtract the new number by the original number
326 - 542 = -216
-216 ÷ 542 = -0.3985239852398524
-0.3985239852398524 x 100 = -39.85%