80.9% is the change from 356 to 644
Calculation steps:
[( 644 - 356 ) ÷ 356] x 100 = 80.9%
Formula
Percentage change = [(644 - 356) / 356] x 100
Subtract the new number by the original number
644 - 356 = 288
288 ÷ 356 = 0.8089887640449438
0.8089887640449438 x 100 = 80.9%