-12.72% is the change from 951 to 830
Calculation steps:
[( 830 - 951 ) ÷ 951] x 100 = -12.72%
Formula
Percentage change = [(830 - 951) / 951] x 100
Subtract the new number by the original number
830 - 951 = -121
-121 ÷ 951 = -0.12723449001051526
-0.12723449001051526 x 100 = -12.72%