70.64% is the change from 344 to 587
Calculation steps:
[( 587 - 344 ) ÷ 344] x 100 = 70.64%
Formula
Percentage change = [(587 - 344) / 344] x 100
Subtract the new number by the original number
587 - 344 = 243
243 ÷ 344 = 0.7063953488372093
0.7063953488372093 x 100 = 70.64%