69.74% is the change from 228 to 387
Calculation steps:
[( 387 - 228 ) ÷ 228] x 100 = 69.74%
Formula
Percentage change = [(387 - 228) / 228] x 100
Subtract the new number by the original number
387 - 228 = 159
159 ÷ 228 = 0.6973684210526315
0.6973684210526315 x 100 = 69.74%