-98.06% is the change from 620 to 12
Calculation steps:
[( 12 - 620 ) ÷ 620] x 100 = -98.06%
Formula
Percentage change = [(12 - 620) / 620] x 100
Subtract the new number by the original number
12 - 620 = -608
-608 ÷ 620 = -0.9806451612903225
-0.9806451612903225 x 100 = -98.06%