-69.3% is the change from 684 to 210
Calculation steps:
[( 210 - 684 ) ÷ 684] x 100 = -69.3%
Formula
Percentage change = [(210 - 684) / 684] x 100
Subtract the new number by the original number
210 - 684 = -474
-474 ÷ 684 = -0.6929824561403509
-0.6929824561403509 x 100 = -69.3%