17.42% is the change from 821 to 964
Calculation steps:
[( 964 - 821 ) ÷ 821] x 100 = 17.42%
Formula
Percentage change = [(964 - 821) / 821] x 100
Subtract the new number by the original number
964 - 821 = 143
143 ÷ 821 = 0.17417783191230207
0.17417783191230207 x 100 = 17.42%