-5.14% is the change from 875 to 830
Calculation steps:
[( 830 - 875 ) ÷ 875] x 100 = -5.14%
Formula
Percentage change = [(830 - 875) / 875] x 100
Subtract the new number by the original number
830 - 875 = -45
-45 ÷ 875 = -0.05142857142857143
-0.05142857142857143 x 100 = -5.14%