-19.11% is the change from 539 to 436
Calculation steps:
[( 436 - 539 ) ÷ 539] x 100 = -19.11%
Formula
Percentage change = [(436 - 539) / 539] x 100
Subtract the new number by the original number
436 - 539 = -103
-103 ÷ 539 = -0.19109461966604824
-0.19109461966604824 x 100 = -19.11%