74.62% is the change from 394 to 688
Calculation steps:
[( 688 - 394 ) ÷ 394] x 100 = 74.62%
Formula
Percentage change = [(688 - 394) / 394] x 100
Subtract the new number by the original number
688 - 394 = 294
294 ÷ 394 = 0.7461928934010152
0.7461928934010152 x 100 = 74.62%