-70.94% is the change from 320 to 93
Calculation steps:
[( 93 - 320 ) ÷ 320] x 100 = -70.94%
Formula
Percentage change = [(93 - 320) / 320] x 100
Subtract the new number by the original number
93 - 320 = -227
-227 ÷ 320 = -0.709375
-0.709375 x 100 = -70.94%