593.94% is the change from 99 to 687
Calculation steps:
[( 687 - 99 ) ÷ 99] x 100 = 593.94%
Formula
Percentage change = [(687 - 99) / 99] x 100
Subtract the new number by the original number
687 - 99 = 588
588 ÷ 99 = 5.9393939393939394
5.9393939393939394 x 100 = 593.94%