1995.24% is the change from 21 to 440
Calculation steps:
[( 440 - 21 ) ÷ 21] x 100 = 1995.24%
Formula
Percentage change = [(440 - 21) / 21] x 100
Subtract the new number by the original number
440 - 21 = 419
419 ÷ 21 = 19.952380952380953
19.952380952380953 x 100 = 1995.24%