68.37% is the change from 588 to 990
Calculation steps:
[( 990 - 588 ) ÷ 588] x 100 = 68.37%
Formula
Percentage change = [(990 - 588) / 588] x 100
Subtract the new number by the original number
990 - 588 = 402
402 ÷ 588 = 0.6836734693877551
0.6836734693877551 x 100 = 68.37%