-68.13% is the change from 662 to 211
Calculation steps:
[( 211 - 662 ) ÷ 662] x 100 = -68.13%
Formula
Percentage change = [(211 - 662) / 662] x 100
Subtract the new number by the original number
211 - 662 = -451
-451 ÷ 662 = -0.6812688821752266
-0.6812688821752266 x 100 = -68.13%