-56.02% is the change from 507 to 223
Calculation steps:
[( 223 - 507 ) ÷ 507] x 100 = -56.02%
Formula
Percentage change = [(223 - 507) / 507] x 100
Subtract the new number by the original number
223 - 507 = -284
-284 ÷ 507 = -0.5601577909270217
-0.5601577909270217 x 100 = -56.02%