-73.94% is the change from 518 to 135
Calculation steps:
[( 135 - 518 ) ÷ 518] x 100 = -73.94%
Formula
Percentage change = [(135 - 518) / 518] x 100
Subtract the new number by the original number
135 - 518 = -383
-383 ÷ 518 = -0.7393822393822393
-0.7393822393822393 x 100 = -73.94%