1400% is the change from 50 to 750
Calculation steps:
[( 750 - 50 ) ÷ 50] x 100 = 1400%
Formula
Percentage change = [(750 - 50) / 50] x 100
Subtract the new number by the original number
750 - 50 = 700
700 ÷ 50 = 14
14 x 100 = 1400%
Example