181.88% is the change from 149 to 420
Calculation steps:
[( 420 - 149 ) ÷ 149] x 100 = 181.88%
Formula
Percentage change = [(420 - 149) / 149] x 100
Subtract the new number by the original number
420 - 149 = 271
271 ÷ 149 = 1.8187919463087248
1.8187919463087248 x 100 = 181.88%