78.3% is the change from 424 to 756
Calculation steps:
[( 756 - 424 ) ÷ 424] x 100 = 78.3%
Formula
Percentage change = [(756 - 424) / 424] x 100
Subtract the new number by the original number
756 - 424 = 332
332 ÷ 424 = 0.7830188679245284
0.7830188679245284 x 100 = 78.3%