789.39% is the change from 66 to 587
Calculation steps:
[( 587 - 66 ) ÷ 66] x 100 = 789.39%
Formula
Percentage change = [(587 - 66) / 66] x 100
Subtract the new number by the original number
587 - 66 = 521
521 ÷ 66 = 7.893939393939394
7.893939393939394 x 100 = 789.39%