-82.29% is the change from 559 to 99
Calculation steps:
[( 99 - 559 ) ÷ 559] x 100 = -82.29%
Formula
Percentage change = [(99 - 559) / 559] x 100
Subtract the new number by the original number
99 - 559 = -460
-460 ÷ 559 = -0.8228980322003577
-0.8228980322003577 x 100 = -82.29%