-33.98% is the change from 830 to 548
Calculation steps:
[( 548 - 830 ) ÷ 830] x 100 = -33.98%
Formula
Percentage change = [(548 - 830) / 830] x 100
Subtract the new number by the original number
548 - 830 = -282
-282 ÷ 830 = -0.3397590361445783
-0.3397590361445783 x 100 = -33.98%