1505.88% is the change from 51 to 819
Calculation steps:
[( 819 - 51 ) ÷ 51] x 100 = 1505.88%
Formula
Percentage change = [(819 - 51) / 51] x 100
Subtract the new number by the original number
819 - 51 = 768
768 ÷ 51 = 15.058823529411764
15.058823529411764 x 100 = 1505.88%