50% is the change from 370 to 555
Calculation steps:
[( 555 - 370 ) ÷ 370] x 100 = 50%
Formula
Percentage change = [(555 - 370) / 370] x 100
Subtract the new number by the original number
555 - 370 = 185
185 ÷ 370 = 0.5
0.5 x 100 = 50%
Example