-78.02% is the change from 910 to 200
Calculation steps:
[( 200 - 910 ) ÷ 910] x 100 = -78.02%
Formula
Percentage change = [(200 - 910) / 910] x 100
Subtract the new number by the original number
200 - 910 = -710
-710 ÷ 910 = -0.7802197802197802
-0.7802197802197802 x 100 = -78.02%