If you multiply 810 by 1.3 (130% in decimal form) then you get the increase, and with that number, you can add it to 810 to get your final answer: 810x1.3=1053 810+1053=1863
130 to 810 is 523.076 because 130 is the old value and 810 is the new value. In this case we have a % of increase because the new value is greater than the old value.
