-38.58% is the change from 508 to 312
Calculation steps:
[( 312 - 508 ) ÷ 508] x 100 = -38.58%
Formula
Percentage change = [(312 - 508) / 508] x 100
Subtract the new number by the original number
312 - 508 = -196
-196 ÷ 508 = -0.3858267716535433
-0.3858267716535433 x 100 = -38.58%