996.43% is the change from 84 to 921
Calculation steps:
[( 921 - 84 ) ÷ 84] x 100 = 996.43%
Formula
Percentage change = [(921 - 84) / 84] x 100
Subtract the new number by the original number
921 - 84 = 837
837 ÷ 84 = 9.964285714285714
9.964285714285714 x 100 = 996.43%