-91.57% is the change from 510 to 43
Calculation steps:
[( 43 - 510 ) ÷ 510] x 100 = -91.57%
Formula
Percentage change = [(43 - 510) / 510] x 100
Subtract the new number by the original number
43 - 510 = -467
-467 ÷ 510 = -0.9156862745098039
-0.9156862745098039 x 100 = -91.57%