1128.57% is the change from 21 to 258
Calculation steps:
[( 258 - 21 ) ÷ 21] x 100 = 1128.57%
Formula
Percentage change = [(258 - 21) / 21] x 100
Subtract the new number by the original number
258 - 21 = 237
237 ÷ 21 = 11.285714285714286
11.285714285714286 x 100 = 1128.57%