-42.54% is the change from 543 to 312
Calculation steps:
[( 312 - 543 ) ÷ 543] x 100 = -42.54%
Formula
Percentage change = [(312 - 543) / 543] x 100
Subtract the new number by the original number
312 - 543 = -231
-231 ÷ 543 = -0.425414364640884
-0.425414364640884 x 100 = -42.54%