-30.08% is the change from 798 to 558
Calculation steps:
[( 558 - 798 ) ÷ 798] x 100 = -30.08%
Formula
Percentage change = [(558 - 798) / 798] x 100
Subtract the new number by the original number
558 - 798 = -240
-240 ÷ 798 = -0.3007518796992481
-0.3007518796992481 x 100 = -30.08%