642% is the change from 50 to 371
Calculation steps:
[( 371 - 50 ) ÷ 50] x 100 = 642%
Formula
Percentage change = [(371 - 50) / 50] x 100
Subtract the new number by the original number
371 - 50 = 321
321 ÷ 50 = 6.42
6.42 x 100 = 642%
Example