-38.63% is the change from 510 to 313
Calculation steps:
[( 313 - 510 ) ÷ 510] x 100 = -38.63%
Formula
Percentage change = [(313 - 510) / 510] x 100
Subtract the new number by the original number
313 - 510 = -197
-197 ÷ 510 = -0.3862745098039216
-0.3862745098039216 x 100 = -38.63%