-12.13% is the change from 577 to 507
Calculation steps:
[( 507 - 577 ) ÷ 577] x 100 = -12.13%
Formula
Percentage change = [(507 - 577) / 577] x 100
Subtract the new number by the original number
507 - 577 = -70
-70 ÷ 577 = -0.12131715771230503
-0.12131715771230503 x 100 = -12.13%