20.87% is the change from 690 to 834
Calculation steps:
[( 834 - 690 ) ÷ 690] x 100 = 20.87%
Formula
Percentage change = [(834 - 690) / 690] x 100
Subtract the new number by the original number
834 - 690 = 144
144 ÷ 690 = 0.20869565217391303
0.20869565217391303 x 100 = 20.87%