-12.16% is the change from 510 to 448
Calculation steps:
[( 448 - 510 ) ÷ 510] x 100 = -12.16%
Formula
Percentage change = [(448 - 510) / 510] x 100
Subtract the new number by the original number
448 - 510 = -62
-62 ÷ 510 = -0.12156862745098039
-0.12156862745098039 x 100 = -12.16%