-59.76% is the change from 507 to 204
Calculation steps:
[( 204 - 507 ) ÷ 507] x 100 = -59.76%
Formula
Percentage change = [(204 - 507) / 507] x 100
Subtract the new number by the original number
204 - 507 = -303
-303 ÷ 507 = -0.5976331360946746
-0.5976331360946746 x 100 = -59.76%