-51.77% is the change from 508 to 245
Calculation steps:
[( 245 - 508 ) ÷ 508] x 100 = -51.77%
Formula
Percentage change = [(245 - 508) / 508] x 100
Subtract the new number by the original number
245 - 508 = -263
-263 ÷ 508 = -0.5177165354330708
-0.5177165354330708 x 100 = -51.77%