-7.8% is the change from 577 to 532
Calculation steps:
[( 532 - 577 ) ÷ 577] x 100 = -7.8%
Formula
Percentage change = [(532 - 577) / 577] x 100
Subtract the new number by the original number
532 - 577 = -45
-45 ÷ 577 = -0.0779896013864818
-0.0779896013864818 x 100 = -7.8%