-76.92% is the change from 910 to 210
Calculation steps:
[( 210 - 910 ) ÷ 910] x 100 = -76.92%
Formula
Percentage change = [(210 - 910) / 910] x 100
Subtract the new number by the original number
210 - 910 = -700
-700 ÷ 910 = -0.7692307692307693
-0.7692307692307693 x 100 = -76.92%