-69.42% is the change from 690 to 211
Calculation steps:
[( 211 - 690 ) ÷ 690] x 100 = -69.42%
Formula
Percentage change = [(211 - 690) / 690] x 100
Subtract the new number by the original number
211 - 690 = -479
-479 ÷ 690 = -0.6942028985507246
-0.6942028985507246 x 100 = -69.42%