-38.04% is the change from 510 to 316
Calculation steps:
[( 316 - 510 ) ÷ 510] x 100 = -38.04%
Formula
Percentage change = [(316 - 510) / 510] x 100
Subtract the new number by the original number
316 - 510 = -194
-194 ÷ 510 = -0.3803921568627451
-0.3803921568627451 x 100 = -38.04%