-94.9% is the change from 510 to 26
Calculation steps:
[( 26 - 510 ) ÷ 510] x 100 = -94.9%
Formula
Percentage change = [(26 - 510) / 510] x 100
Subtract the new number by the original number
26 - 510 = -484
-484 ÷ 510 = -0.9490196078431372
-0.9490196078431372 x 100 = -94.9%