1638.1% is the change from 21 to 365
Calculation steps:
[( 365 - 21 ) ÷ 21] x 100 = 1638.1%
Formula
Percentage change = [(365 - 21) / 21] x 100
Subtract the new number by the original number
365 - 21 = 344
344 ÷ 21 = 16.38095238095238
16.38095238095238 x 100 = 1638.1%