-7.57% is the change from 898 to 830
Calculation steps:
[( 830 - 898 ) ÷ 898] x 100 = -7.57%
Formula
Percentage change = [(830 - 898) / 898] x 100
Subtract the new number by the original number
830 - 898 = -68
-68 ÷ 898 = -0.0757238307349666
-0.0757238307349666 x 100 = -7.57%