-68.17% is the change from 663 to 211
Calculation steps:
[( 211 - 663 ) ÷ 663] x 100 = -68.17%
Formula
Percentage change = [(211 - 663) / 663] x 100
Subtract the new number by the original number
211 - 663 = -452
-452 ÷ 663 = -0.6817496229260935
-0.6817496229260935 x 100 = -68.17%