1347.62% is the change from 21 to 304
Calculation steps:
[( 304 - 21 ) ÷ 21] x 100 = 1347.62%
Formula
Percentage change = [(304 - 21) / 21] x 100
Subtract the new number by the original number
304 - 21 = 283
283 ÷ 21 = 13.476190476190476
13.476190476190476 x 100 = 1347.62%
Example