-35.47% is the change from 998 to 644
Calculation steps:
[( 644 - 998 ) ÷ 998] x 100 = -35.47%
Formula
Percentage change = [(644 - 998) / 998] x 100
Subtract the new number by the original number
644 - 998 = -354
-354 ÷ 998 = -0.35470941883767537
-0.35470941883767537 x 100 = -35.47%