-62.54% is the change from 921 to 345
Calculation steps:
[( 345 - 921 ) ÷ 921] x 100 = -62.54%
Formula
Percentage change = [(345 - 921) / 921] x 100
Subtract the new number by the original number
345 - 921 = -576
-576 ÷ 921 = -0.6254071661237784
-0.6254071661237784 x 100 = -62.54%