138.99% is the change from 218 to 521
Calculation steps:
[( 521 - 218 ) ÷ 218] x 100 = 138.99%
Formula
Percentage change = [(521 - 218) / 218] x 100
Subtract the new number by the original number
521 - 218 = 303
303 ÷ 218 = 1.389908256880734
1.389908256880734 x 100 = 138.99%