-98.11% is the change from 634 to 12
Calculation steps:
[( 12 - 634 ) ÷ 634] x 100 = -98.11%
Formula
Percentage change = [(12 - 634) / 634] x 100
Subtract the new number by the original number
12 - 634 = -622
-622 ÷ 634 = -0.9810725552050473
-0.9810725552050473 x 100 = -98.11%