86.59% is the change from 328 to 612
Calculation steps:
[( 612 - 328 ) ÷ 328] x 100 = 86.59%
Formula
Percentage change = [(612 - 328) / 328] x 100
Subtract the new number by the original number
612 - 328 = 284
284 ÷ 328 = 0.8658536585365854
0.8658536585365854 x 100 = 86.59%