To get the answer we can use proportion. We know that 438000 its 100% and we want to know how much its 561000. 438000 ------------ 100% 561000 ------------ x Crossmultiply now 438000*x=561000*100% 438000x=56100000 /:438000 (divide both sides by 438000) x=128% Finally we have to subtract 128%-100%=28% to get percent of increase. The answer is 28%.
find out how much 561000 goes over 438000, which would be 123000. then you divide to find out the ratio or percentage of the increase from 438000 would be. 123000/438000=.2808219178 so .28 so 28%.