-64.68% is the change from 971 to 343
Calculation steps:
[( 343 - 971 ) ÷ 971] x 100 = -64.68%
Formula
Percentage change = [(343 - 971) / 971] x 100
Subtract the new number by the original number
343 - 971 = -628
-628 ÷ 971 = -0.646755921730175
-0.646755921730175 x 100 = -64.68%