-89.27% is the change from 634 to 68
Calculation steps:
[( 68 - 634 ) ÷ 634] x 100 = -89.27%
Formula
Percentage change = [(68 - 634) / 634] x 100
Subtract the new number by the original number
68 - 634 = -566
-566 ÷ 634 = -0.8927444794952681
-0.8927444794952681 x 100 = -89.27%