141.2% is the change from 216 to 521
Calculation steps:
[( 521 - 216 ) ÷ 216] x 100 = 141.2%
Formula
Percentage change = [(521 - 216) / 216] x 100
Subtract the new number by the original number
521 - 216 = 305
305 ÷ 216 = 1.412037037037037
1.412037037037037 x 100 = 141.2%