321.86% is the change from 215 to 907
Calculation steps:
[( 907 - 215 ) ÷ 215] x 100 = 321.86%
Formula
Percentage change = [(907 - 215) / 215] x 100
Subtract the new number by the original number
907 - 215 = 692
692 ÷ 215 = 3.218604651162791
3.218604651162791 x 100 = 321.86%