89.38% is the change from 320 to 606
Calculation steps:
[( 606 - 320 ) ÷ 320] x 100 = 89.38%
Formula
Percentage change = [(606 - 320) / 320] x 100
Subtract the new number by the original number
606 - 320 = 286
286 ÷ 320 = 0.89375
0.89375 x 100 = 89.38%