1284.21% is the change from 19 to 263
Calculation steps:
[( 263 - 19 ) ÷ 19] x 100 = 1284.21%
Formula
Percentage change = [(263 - 19) / 19] x 100
Subtract the new number by the original number
263 - 19 = 244
244 ÷ 19 = 12.842105263157896
12.842105263157896 x 100 = 1284.21%