19.36% is the change from 687 to 820
Calculation steps:
[( 820 - 687 ) ÷ 687] x 100 = 19.36%
Formula
Percentage change = [(820 - 687) / 687] x 100
Subtract the new number by the original number
820 - 687 = 133
133 ÷ 687 = 0.19359534206695778
0.19359534206695778 x 100 = 19.36%