-15.46% is the change from 511 to 432
Calculation steps:
[( 432 - 511 ) ÷ 511] x 100 = -15.46%
Formula
Percentage change = [(432 - 511) / 511] x 100
Subtract the new number by the original number
432 - 511 = -79
-79 ÷ 511 = -0.15459882583170254
-0.15459882583170254 x 100 = -15.46%