221.79% is the change from 78 to 251
Calculation steps:
[( 251 - 78 ) ÷ 78] x 100 = 221.79%
Formula
Percentage change = [(251 - 78) / 78] x 100
Subtract the new number by the original number
251 - 78 = 173
173 ÷ 78 = 2.217948717948718
2.217948717948718 x 100 = 221.79%