-59.17% is the change from 507 to 207
Calculation steps:
[( 207 - 507 ) ÷ 507] x 100 = -59.17%
Formula
Percentage change = [(207 - 507) / 507] x 100
Subtract the new number by the original number
207 - 507 = -300
-300 ÷ 507 = -0.591715976331361
-0.591715976331361 x 100 = -59.17%