-34.82% is the change from 830 to 541
Calculation steps:
[( 541 - 830 ) ÷ 830] x 100 = -34.82%
Formula
Percentage change = [(541 - 830) / 830] x 100
Subtract the new number by the original number
541 - 830 = -289
-289 ÷ 830 = -0.3481927710843373
-0.3481927710843373 x 100 = -34.82%