-94.75% is the change from 648 to 34
Calculation steps:
[( 34 - 648 ) ÷ 648] x 100 = -94.75%
Formula
Percentage change = [(34 - 648) / 648] x 100
Subtract the new number by the original number
34 - 648 = -614
-614 ÷ 648 = -0.9475308641975309
-0.9475308641975309 x 100 = -94.75%