-22.55% is the change from 510 to 395
Calculation steps:
[( 395 - 510 ) ÷ 510] x 100 = -22.55%
Formula
Percentage change = [(395 - 510) / 510] x 100
Subtract the new number by the original number
395 - 510 = -115
-115 ÷ 510 = -0.22549019607843138
-0.22549019607843138 x 100 = -22.55%