-56.36% is the change from 511 to 223
Calculation steps:
[( 223 - 511 ) ÷ 511] x 100 = -56.36%
Formula
Percentage change = [(223 - 511) / 511] x 100
Subtract the new number by the original number
223 - 511 = -288
-288 ÷ 511 = -0.5636007827788649
-0.5636007827788649 x 100 = -56.36%