-26.38% is the change from 542 to 399
Calculation steps:
[( 399 - 542 ) ÷ 542] x 100 = -26.38%
Formula
Percentage change = [(399 - 542) / 542] x 100
Subtract the new number by the original number
399 - 542 = -143
-143 ÷ 542 = -0.26383763837638374
-0.26383763837638374 x 100 = -26.38%