-45.36% is the change from 507 to 277
Calculation steps:
[( 277 - 507 ) ÷ 507] x 100 = -45.36%
Formula
Percentage change = [(277 - 507) / 507] x 100
Subtract the new number by the original number
277 - 507 = -230
-230 ÷ 507 = -0.4536489151873767
-0.4536489151873767 x 100 = -45.36%