-91.31% is the change from 518 to 45
Calculation steps:
[( 45 - 518 ) ÷ 518] x 100 = -91.31%
Formula
Percentage change = [(45 - 518) / 518] x 100
Subtract the new number by the original number
45 - 518 = -473
-473 ÷ 518 = -0.9131274131274131
-0.9131274131274131 x 100 = -91.31%