-25.88% is the change from 510 to 378
Calculation steps:
[( 378 - 510 ) ÷ 510] x 100 = -25.88%
Formula
Percentage change = [(378 - 510) / 510] x 100
Subtract the new number by the original number
378 - 510 = -132
-132 ÷ 510 = -0.25882352941176473
-0.25882352941176473 x 100 = -25.88%