4538.1% is the change from 21 to 974
Calculation steps:
[( 974 - 21 ) ÷ 21] x 100 = 4538.1%
Formula
Percentage change = [(974 - 21) / 21] x 100
Subtract the new number by the original number
974 - 21 = 953
953 ÷ 21 = 45.38095238095238
45.38095238095238 x 100 = 4538.1%