16.87% is the change from 830 to 970
Calculation steps:
[( 970 - 830 ) ÷ 830] x 100 = 16.87%
Formula
Percentage change = [(970 - 830) / 830] x 100
Subtract the new number by the original number
970 - 830 = 140
140 ÷ 830 = 0.1686746987951807
0.1686746987951807 x 100 = 16.87%