1070% is the change from 70 to 819
Calculation steps:
[( 819 - 70 ) ÷ 70] x 100 = 1070%
Formula
Percentage change = [(819 - 70) / 70] x 100
Subtract the new number by the original number
819 - 70 = 749
749 ÷ 70 = 10.7
10.7 x 100 = 1070%
Example