-71.76% is the change from 910 to 257
Calculation steps:
[( 257 - 910 ) ÷ 910] x 100 = -71.76%
Formula
Percentage change = [(257 - 910) / 910] x 100
Subtract the new number by the original number
257 - 910 = -653
-653 ÷ 910 = -0.7175824175824176
-0.7175824175824176 x 100 = -71.76%