-64.49% is the change from 966 to 343
Calculation steps:
[( 343 - 966 ) ÷ 966] x 100 = -64.49%
Formula
Percentage change = [(343 - 966) / 966] x 100
Subtract the new number by the original number
343 - 966 = -623
-623 ÷ 966 = -0.644927536231884
-0.644927536231884 x 100 = -64.49%