-36.47% is the change from 998 to 634
Calculation steps:
[( 634 - 998 ) ÷ 998] x 100 = -36.47%
Formula
Percentage change = [(634 - 998) / 998] x 100
Subtract the new number by the original number
634 - 998 = -364
-364 ÷ 998 = -0.36472945891783565
-0.36472945891783565 x 100 = -36.47%