-41.33% is the change from 542 to 318
Calculation steps:
[( 318 - 542 ) ÷ 542] x 100 = -41.33%
Formula
Percentage change = [(318 - 542) / 542] x 100
Subtract the new number by the original number
318 - 542 = -224
-224 ÷ 542 = -0.4132841328413284
-0.4132841328413284 x 100 = -41.33%