66.61% is the change from 587 to 978
Calculation steps:
[( 978 - 587 ) ÷ 587] x 100 = 66.61%
Formula
Percentage change = [(978 - 587) / 587] x 100
Subtract the new number by the original number
978 - 587 = 391
391 ÷ 587 = 0.666098807495741
0.666098807495741 x 100 = 66.61%