851.85% is the change from 27 to 257
Calculation steps:
[( 257 - 27 ) ÷ 27] x 100 = 851.85%
Formula
Percentage change = [(257 - 27) / 27] x 100
Subtract the new number by the original number
257 - 27 = 230
230 ÷ 27 = 8.518518518518519
8.518518518518519 x 100 = 851.85%