-70.3% is the change from 707 to 210
Calculation steps:
[( 210 - 707 ) ÷ 707] x 100 = -70.3%
Formula
Percentage change = [(210 - 707) / 707] x 100
Subtract the new number by the original number
210 - 707 = -497
-497 ÷ 707 = -0.7029702970297029
-0.7029702970297029 x 100 = -70.3%