-45.47% is the change from 508 to 277
Calculation steps:
[( 277 - 508 ) ÷ 508] x 100 = -45.47%
Formula
Percentage change = [(277 - 508) / 508] x 100
Subtract the new number by the original number
277 - 508 = -231
-231 ÷ 508 = -0.4547244094488189
-0.4547244094488189 x 100 = -45.47%