43.4% is the change from 212 to 304
Calculation steps:
[( 304 - 212 ) ÷ 212] x 100 = 43.4%
Formula
Percentage change = [(304 - 212) / 212] x 100
Subtract the new number by the original number
304 - 212 = 92
92 ÷ 212 = 0.4339622641509434
0.4339622641509434 x 100 = 43.4%