-10.76% is the change from 511 to 456
Calculation steps:
[( 456 - 511 ) ÷ 511] x 100 = -10.76%
Formula
Percentage change = [(456 - 511) / 511] x 100
Subtract the new number by the original number
456 - 511 = -55
-55 ÷ 511 = -0.10763209393346379
-0.10763209393346379 x 100 = -10.76%