1178% is the change from 50 to 639
Calculation steps:
[( 639 - 50 ) ÷ 50] x 100 = 1178%
Formula
Percentage change = [(639 - 50) / 50] x 100
Subtract the new number by the original number
639 - 50 = 589
589 ÷ 50 = 11.78
11.78 x 100 = 1178%
Example