-23.04% is the change from 664 to 511
Calculation steps:
[( 511 - 664 ) ÷ 664] x 100 = -23.04%
Formula
Percentage change = [(511 - 664) / 664] x 100
Subtract the new number by the original number
511 - 664 = -153
-153 ÷ 664 = -0.23042168674698796
-0.23042168674698796 x 100 = -23.04%