-54.83% is the change from 507 to 229
Calculation steps:
[( 229 - 507 ) ÷ 507] x 100 = -54.83%
Formula
Percentage change = [(229 - 507) / 507] x 100
Subtract the new number by the original number
229 - 507 = -278
-278 ÷ 507 = -0.5483234714003945
-0.5483234714003945 x 100 = -54.83%