-80.74% is the change from 514 to 99
Calculation steps:
[( 99 - 514 ) ÷ 514] x 100 = -80.74%
Formula
Percentage change = [(99 - 514) / 514] x 100
Subtract the new number by the original number
99 - 514 = -415
-415 ÷ 514 = -0.8073929961089494
-0.8073929961089494 x 100 = -80.74%