-57.46% is the change from 811 to 345
Calculation steps:
[( 345 - 811 ) ÷ 811] x 100 = -57.46%
Formula
Percentage change = [(345 - 811) / 811] x 100
Subtract the new number by the original number
345 - 811 = -466
-466 ÷ 811 = -0.5745992601726264
-0.5745992601726264 x 100 = -57.46%