1229.69% is the change from 64 to 851
Calculation steps:
[( 851 - 64 ) ÷ 64] x 100 = 1229.69%
Formula
Percentage change = [(851 - 64) / 64] x 100
Subtract the new number by the original number
851 - 64 = 787
787 ÷ 64 = 12.296875
12.296875 x 100 = 1229.69%