-94.29% is the change from 210 to 12
Calculation steps:
[( 12 - 210 ) ÷ 210] x 100 = -94.29%
Formula
Percentage change = [(12 - 210) / 210] x 100
Subtract the new number by the original number
12 - 210 = -198
-198 ÷ 210 = -0.9428571428571428
-0.9428571428571428 x 100 = -94.29%