66.9% is the change from 423 to 706
Calculation steps:
[( 706 - 423 ) ÷ 423] x 100 = 66.9%
Formula
Percentage change = [(706 - 423) / 423] x 100
Subtract the new number by the original number
706 - 423 = 283
283 ÷ 423 = 0.6690307328605201
0.6690307328605201 x 100 = 66.9%