1650% is the change from 38 to 665
Calculation steps:
[( 665 - 38 ) ÷ 38] x 100 = 1650%
Formula
Percentage change = [(665 - 38) / 38] x 100
Subtract the new number by the original number
665 - 38 = 627
627 ÷ 38 = 16.5
16.5 x 100 = 1650%
Example