-70.59% is the change from 731 to 215
Calculation steps:
[( 215 - 731 ) ÷ 731] x 100 = -70.59%
Formula
Percentage change = [(215 - 731) / 731] x 100
Subtract the new number by the original number
215 - 731 = -516
-516 ÷ 731 = -0.7058823529411765
-0.7058823529411765 x 100 = -70.59%