-97.14% is the change from 210 to 6
Calculation steps:
[( 6 - 210 ) ÷ 210] x 100 = -97.14%
Formula
Percentage change = [(6 - 210) / 210] x 100
Subtract the new number by the original number
6 - 210 = -204
-204 ÷ 210 = -0.9714285714285714
-0.9714285714285714 x 100 = -97.14%