-62.3% is the change from 915 to 345
Calculation steps:
[( 345 - 915 ) ÷ 915] x 100 = -62.3%
Formula
Percentage change = [(345 - 915) / 915] x 100
Subtract the new number by the original number
345 - 915 = -570
-570 ÷ 915 = -0.6229508196721312
-0.6229508196721312 x 100 = -62.3%