-63.12% is the change from 507 to 187
Calculation steps:
[( 187 - 507 ) ÷ 507] x 100 = -63.12%
Formula
Percentage change = [(187 - 507) / 507] x 100
Subtract the new number by the original number
187 - 507 = -320
-320 ÷ 507 = -0.631163708086785
-0.631163708086785 x 100 = -63.12%