9.88% is the change from 850 to 934
Calculation steps:
[( 934 - 850 ) ÷ 850] x 100 = 9.88%
Formula
Percentage change = [(934 - 850) / 850] x 100
Subtract the new number by the original number
934 - 850 = 84
84 ÷ 850 = 0.0988235294117647
0.0988235294117647 x 100 = 9.88%