840% is the change from 65 to 611
Calculation steps:
[( 611 - 65 ) ÷ 65] x 100 = 840%
Formula
Percentage change = [(611 - 65) / 65] x 100
Subtract the new number by the original number
611 - 65 = 546
546 ÷ 65 = 8.4
8.4 x 100 = 840%
Example