so percent increase
therefor it went form 438000 to 561000 so 438000 =100% and 561000 is x%
100 is to 438000 as is x is to 561000
100:438000=x:561000
convert fraction
100/438000=x/561000
mulitply both sides by 561000
438000x/100=561000
multiply both sides by 561000
56100000/438000=x
128.08...=x or aprox 128%
incerase is found by subtracting original from increased value
original=100%
increased value=128%
128-100=28
the answer is 28% increase