2395.24% is the change from 21 to 524
Calculation steps:
[( 524 - 21 ) ÷ 21] x 100 = 2395.24%
Formula
Percentage change = [(524 - 21) / 21] x 100
Subtract the new number by the original number
524 - 21 = 503
503 ÷ 21 = 23.952380952380953
23.952380952380953 x 100 = 2395.24%