-34.87% is the change from 522 to 340
Calculation steps:
[( 340 - 522 ) ÷ 522] x 100 = -34.87%
Formula
Percentage change = [(340 - 522) / 522] x 100
Subtract the new number by the original number
340 - 522 = -182
-182 ÷ 522 = -0.3486590038314176
-0.3486590038314176 x 100 = -34.87%