2.53% is the change from 831 to 852
Calculation steps:
[( 852 - 831 ) ÷ 831] x 100 = 2.53%
Formula
Percentage change = [(852 - 831) / 831] x 100
Subtract the new number by the original number
852 - 831 = 21
21 ÷ 831 = 0.02527075812274368
0.02527075812274368 x 100 = 2.53%