-70.21% is the change from 705 to 210
Calculation steps:
[( 210 - 705 ) ÷ 705] x 100 = -70.21%
Formula
Percentage change = [(210 - 705) / 705] x 100
Subtract the new number by the original number
210 - 705 = -495
-495 ÷ 705 = -0.7021276595744681
-0.7021276595744681 x 100 = -70.21%