-62.64% is the change from 910 to 340
Calculation steps:
[( 340 - 910 ) ÷ 910] x 100 = -62.64%
Formula
Percentage change = [(340 - 910) / 910] x 100
Subtract the new number by the original number
340 - 910 = -570
-570 ÷ 910 = -0.6263736263736264
-0.6263736263736264 x 100 = -62.64%