-60.75% is the change from 507 to 199
Calculation steps:
[( 199 - 507 ) ÷ 507] x 100 = -60.75%
Formula
Percentage change = [(199 - 507) / 507] x 100
Subtract the new number by the original number
199 - 507 = -308
-308 ÷ 507 = -0.6074950690335306
-0.6074950690335306 x 100 = -60.75%